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The seedless wild parsnip fruit are preferred by certain herbivores and so serve as a "decoy defense" against seed predation. [3] Utah juniper has a similar defense against bird feeding. [4] The ability to produce seedless fruit when pollination is unsuccessful may be an advantage to a plant because it provides food for the plant's seed ...
The gymnosperms (/ ˈ dʒ ɪ m n ə ˌ s p ɜːr m z,-n oʊ-/ ⓘ JIM-nə-spurmz, -noh-; lit. ' revealed seeds ') are a group of woody, perennial seed-producing plants, typically lacking the protective outer covering which surrounds the seeds in flowering plants, that include conifers, cycads, Ginkgo, and gnetophytes, forming the clade Gymnospermae [2] The term gymnosperm comes from the ...
In male sterile plants, the parthenocarpy expresses itself only sporadically on the plant with deformed fruits. It has been reported that plant hormones provided by the ovary seed (such as auxins and gibberellins) promote fruit set and growth to produce seedless fruits. Initially, without seeds in the fruit, vegetative propagation was essential.
In stenospermocarpic fruits, normal pollination and fertilization are still required to ensure that the fruit 'sets', i.e. continues to develop on the plant; however subsequent abortion of the embryo that began growing following fertilization leads to a near seedless condition. The remains of the undeveloped seed are visible in the fruit.
Asterotheca sp. is a vascularized, seedless fern that reproduces via spores that require the presence of water. This genus of fern lived from the Carboniferous to the Triassic and is an ancestor to all modern seed plants. The leaves of Asterotheca (and all ferns) are called fronds. [1]
A plant which completes its life cycle (i.e. germinates, reproduces, and dies) within two years or growing seasons. Biennial plants usually form a basal rosette of leaves in the first year and then flower and fruit in the second year. bifid Forked; cut in two for about half its length. Compare trifid. bifoliate
Jaffa oranges, also known as shamouti, are practically seedless, with a flavour that has been described as "excellent" and "sweet and fine". [ 2 ] [ 3 ] [ 4 ] The two other main orange varieties cultivated in the region are the navel orange and the bitter orange; the latter is grown in Iran for its peel. [ 2 ]
At one time, the cryptogams were formally recognised as a group within the plant kingdom. In his system for classification of all known plants and animals, Carl Linnaeus (1707–1778) divided the plant kingdom into 24 classes, [1] one of which was the "Cryptogamia". This included all plants with concealed reproductive organs.